Resumo

CARDONA, Gladys; PENA-VENEGAS, Clara Patricia  e  ARCOS, Adriana. Occurrence of arbuscular micorrhizae fungi in red pepper (Capsicum sp.) in the Amazonian region of Colombia. Agron. colomb. [online]. 2008, vol.26, n.3, pp.459-470. ISSN 0120-9965.

Capsicum sp. is a native American specie highly important around the world because of its wide array of uses. The Colombian Amazon is considered one of the main origin sites that contain a richness of morph species. However, very few studies have evaluated the dynamics between Arbuscular Mycorrhizae Fungi (AMF) and red pepper in spite of its relevance to growth and survival of plants under limiting nutrient conditions. AMF occurrence was studied from the collection of roots and rhizosphere of pepper in different routes. Colonization was assessed by the Phillips and Hayman methodology (1970) with Sieverding modifications (1983). Spores isolation and quantification was evaluated by Gerdeman y Nicolson (1963) methodology and modified by Sieverding (1983). Species determination was carried out by AMF spore description. All of the evaluated red chillies pepper samples showed AMF associations. Chemical characteristics of soils, plant diversity on the chagras, different collections types and Capsicum species influenced the high and low occurrence of AMF symbiosis. Nine morph species of AMF were identified and Glomus sp. the genus most frequently related.

Palavras-chave : symbiosis; tropical forest; soil; crop.

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